Merge "doc: Update N Preview release notes for DP2." into mnc-mr-docs am: 5f8bdb9
am: 1ccba99

* commit '1ccba999f52609f466524765fc2f949d4dd72baf':
  doc: Update N Preview release notes for DP2.

Change-Id: I8c1b82f0fadb19574f68585c468b76393569c302